Sep 20 20:59:10.511 INFO checking souvik1997/kernel-roulette against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 20 20:59:10.511 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 20 20:59:10.511 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-6/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 20:59:10.732 INFO blam! 4fad1a7db75d5c9499fa9a688ae337a92765da5917d3321cb3e25000935639b2
Sep 20 20:59:10.734 INFO running `"docker" "start" "-a" "4fad1a7db75d5c9499fa9a688ae337a92765da5917d3321cb3e25000935639b2"`
Sep 20 20:59:13.033 INFO kablam! usermod: no changes
Sep 20 20:59:13.129 INFO kablam!     Checking spin v0.4.7
Sep 20 20:59:13.130 INFO kablam!     Checking rand v0.4.2
Sep 20 20:59:13.545 INFO kablam! error[E0635]: unknown feature `const_atomic_usize_new`
Sep 20 20:59:13.545 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.7/src/lib.rs:8:76
Sep 20 20:59:13.545 INFO kablam!   |
Sep 20 20:59:13.545 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Sep 20 20:59:13.545 INFO kablam!   |                                                                            ^^^^^^^^^^^^^^^^^^^^^^
Sep 20 20:59:13.546 INFO kablam! 
Sep 20 20:59:13.546 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 20 20:59:13.546 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.7/src/lib.rs:8:53
Sep 20 20:59:13.546 INFO kablam!   |
Sep 20 20:59:13.546 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Sep 20 20:59:13.546 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Sep 20 20:59:13.546 INFO kablam! 
Sep 20 20:59:13.582 INFO kablam! error: aborting due to 2 previous errors
Sep 20 20:59:13.582 INFO kablam! 
Sep 20 20:59:13.582 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 20 20:59:13.589 INFO kablam! error: Could not compile `spin`.
Sep 20 20:59:13.589 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 20 20:59:14.565 INFO kablam! error: build failed
Sep 20 20:59:14.570 INFO kablam! su: No module specific data is present
Sep 20 20:59:15.988 INFO running `"docker" "rm" "-f" "4fad1a7db75d5c9499fa9a688ae337a92765da5917d3321cb3e25000935639b2"`
Sep 20 20:59:16.100 INFO blam! 4fad1a7db75d5c9499fa9a688ae337a92765da5917d3321cb3e25000935639b2